Hide Table of Contents

Get Areas of MidSurface Faces (C#)

This example shows how to get the areas of mid-surface faces.


// Preconditions: Part document open, and

//                part contains a mid-surface feature,

//                which is selected.


// Postconditions: None.


using SolidWorks.Interop.sldworks;

using SolidWorks.Interop.swconst;

using System;

using System.Diagnostics;

using System.Runtime.InteropServices;

namespace FaceArea.csproj


    public partial class SolidWorksMacro


        ModelDoc2 swModel;

        SelectionMgr swSelMgr;

        MidSurface3 swMidSurf;

        Feature swFeat;

        Face2 myFace;

        object[] faces;

        int count;

        int index;

        double area;


        public void Main()


            swModel = swApp.ActiveDoc as ModelDoc2;

            swSelMgr = swModel.SelectionManager as SelectionMgr;

            swFeat = (Feature)swSelMgr.GetSelectedObject6(1, -1);

            swMidSurf = (MidSurface3)swFeat.GetSpecificFeature2();


            count = swMidSurf.GetFaceCount();

            Debug.Print ("Number of faces for midsurface feature: " + count);


            faces = (object[])swMidSurf.GetFaces();


            for (index = 0; index < count; index++)


                myFace = faces[index] as Face2;

                area = myFace.GetArea();

                Debug.Print ("Area of face of midsurface feature: " + area);



        /// <summary>

        ///  The SldWorks swApp variable is pre-assigned for you.

        /// </summary>

        public SldWorks swApp;



Provide feedback on this topic

SOLIDWORKS welcomes your feedback concerning the presentation, accuracy, and thoroughness of the documentation. Use the form below to send your comments and suggestions about this topic directly to our documentation team. The documentation team cannot answer technical support questions. Click here for information about technical support.

* Required

Subject:   Feedback on Help Topics
Page:   Get Areas of MidSurface Faces (C#)
*   I acknowledge I have read and I hereby accept the privacy policy under which my Personal Data will be used by Dassault Systèmes

Print Topic

Select the scope of content to print:


We have detected you are using a browser version older than Internet Explorer 7. For optimized display, we suggest upgrading your browser to Internet Explorer 7 or newer.

 Never show this message again

Web Help Content Version: API Help (English only) 2015 SP05

To disable Web help from within SOLIDWORKS and use local help instead, click Help > Use SOLIDWORKS Web Help.

To report problems encountered with the Web help interface and search, contact your local support representative. To provide feedback on individual help topics, use the “Feedback on this topic” link on the individual topic page.